Broken Metal Coil

For your Simonton window using single 1/2" coil springs on each side of the sash, our Series 160 coil springs should be used as the substitute. When ordering you will need the spring number stamped on the old spring. Other parts in your photo show that you are able to use our 15-191 pivot shoe, 15-178 bumper and our new style 15-150S coil spring as replacements. You only need to replace what is broken.

Before proceeding onto the next step, is it possible you can take a photo of the spring weight number and show us or give us the weight of your sash?

For the two larger sashes, use S160-6, and for the small sash, use S160-3.

It's hard to say without seeing it, but my guess is the nylon housing might be upside down. The screw should be on the bottom where the coil spring rest on the nylon curve block. Look at the photo we have of the 15-150S. The sides of the track would hold the spring inside the cover.

Hold on! Before you cut anything, send photos of the sash problem you're running into.